add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/x86/boot/boot.h
..
..
@@ -110,66 +110,78 @@
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 static inline u8 rdfs8(addr_t addr)
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 {
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+	u8 *ptr = (u8 *)absolute_pointer(addr);
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 	u8 v;
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-	asm volatile("movb %%fs:%1,%0" : "=q" (v) : "m" (*(u8 *)addr));
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+	asm volatile("movb %%fs:%1,%0" : "=q" (v) : "m" (*ptr));
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 	return v;
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 }
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 static inline u16 rdfs16(addr_t addr)
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 {
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+	u16 *ptr = (u16 *)absolute_pointer(addr);
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 	u16 v;
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-	asm volatile("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
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+	asm volatile("movw %%fs:%1,%0" : "=r" (v) : "m" (*ptr));
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 	return v;
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 }
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 static inline u32 rdfs32(addr_t addr)
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 {
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+	u32 *ptr = (u32 *)absolute_pointer(addr);
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 	u32 v;
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-	asm volatile("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
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+	asm volatile("movl %%fs:%1,%0" : "=r" (v) : "m" (*ptr));
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 	return v;
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 }
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 static inline void wrfs8(u8 v, addr_t addr)
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 {
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-	asm volatile("movb %1,%%fs:%0" : "+m" (*(u8 *)addr) : "qi" (v));
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+	u8 *ptr = (u8 *)absolute_pointer(addr);
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+	asm volatile("movb %1,%%fs:%0" : "+m" (*ptr) : "qi" (v));
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 }
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 static inline void wrfs16(u16 v, addr_t addr)
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 {
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-	asm volatile("movw %1,%%fs:%0" : "+m" (*(u16 *)addr) : "ri" (v));
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+	u16 *ptr = (u16 *)absolute_pointer(addr);
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+	asm volatile("movw %1,%%fs:%0" : "+m" (*ptr) : "ri" (v));
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 }
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 static inline void wrfs32(u32 v, addr_t addr)
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 {
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-	asm volatile("movl %1,%%fs:%0" : "+m" (*(u32 *)addr) : "ri" (v));
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+	u32 *ptr = (u32 *)absolute_pointer(addr);
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+	asm volatile("movl %1,%%fs:%0" : "+m" (*ptr) : "ri" (v));
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 }
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 static inline u8 rdgs8(addr_t addr)
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 {
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+	u8 *ptr = (u8 *)absolute_pointer(addr);
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 	u8 v;
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-	asm volatile("movb %%gs:%1,%0" : "=q" (v) : "m" (*(u8 *)addr));
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+	asm volatile("movb %%gs:%1,%0" : "=q" (v) : "m" (*ptr));
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 	return v;
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 }
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 static inline u16 rdgs16(addr_t addr)
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 {
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+	u16 *ptr = (u16 *)absolute_pointer(addr);
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 	u16 v;
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-	asm volatile("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
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+	asm volatile("movw %%gs:%1,%0" : "=r" (v) : "m" (*ptr));
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 	return v;
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 }
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 static inline u32 rdgs32(addr_t addr)
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 {
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+	u32 *ptr = (u32 *)absolute_pointer(addr);
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 	u32 v;
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-	asm volatile("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
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+	asm volatile("movl %%gs:%1,%0" : "=r" (v) : "m" (*ptr));
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 	return v;
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 }
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 static inline void wrgs8(u8 v, addr_t addr)
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 {
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-	asm volatile("movb %1,%%gs:%0" : "+m" (*(u8 *)addr) : "qi" (v));
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+	u8 *ptr = (u8 *)absolute_pointer(addr);
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+	asm volatile("movb %1,%%gs:%0" : "+m" (*ptr) : "qi" (v));
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 }
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 static inline void wrgs16(u16 v, addr_t addr)
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 {
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-	asm volatile("movw %1,%%gs:%0" : "+m" (*(u16 *)addr) : "ri" (v));
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+	u16 *ptr = (u16 *)absolute_pointer(addr);
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+	asm volatile("movw %1,%%gs:%0" : "+m" (*ptr) : "ri" (v));
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 }
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 static inline void wrgs32(u32 v, addr_t addr)
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 {
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-	asm volatile("movl %1,%%gs:%0" : "+m" (*(u32 *)addr) : "ri" (v));
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+	u32 *ptr = (u32 *)absolute_pointer(addr);
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+	asm volatile("movl %1,%%gs:%0" : "+m" (*ptr) : "ri" (v));
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 }
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 /* Note: these only return true/false, not a signed return value! */